Home / 15,374.93-21,219.40-8,661.85

Finding the Fourth Proportional to 15,374.93, 21,219.40 and 8,661.85

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Solution

The fourth proportional to 15,374.93, 21,219.40 and 8,661.85 is: 11,954.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,374.93 : 21,219.40 = 8,661.85 : x
  2. Step 2: Convert to fraction form
    15,374.93/21,219.40 = 8,661.85/x
  3. Step 3: Cross multiply
    15,374.93x = 21,219.40 × 8,661.85
  4. Step 4: Simplify right side
    15,374.93x = 183,799,217.67
  5. Step 5: Solve for x
    x = 183,799,217.67/15,374.93
  6. Step 6: Final answer
    x = 11,954.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.